US2646359A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Modified barium titanate ceramic materials
Assignee: RCA Corp
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Filing: 1951-04-10
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Granted: 1953-07-21
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Expires: 1971-04-10
Abstract
No abstract record available.
Inventors
- 👤 Wainer Eugene
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:05
CPC Classifications
C; C04; C04B; C04B35/00; C04B35/01; C04B35/46; C04B35/462; C04B35/465; C04B35/468; C04B35/4682
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
41 words
A VITREOUS CERAMIC MATERIAL COMPRISING BARIUM ITANATE AND A SUBSTANCE FROM THE CLASS CONSISTING OF SODIUM AND POTASSIUM COLUMBATES AND TANTALATES, THE PERCENTAGE BY WEIGHT OF SAID SODIUM OR POTASSIUM COMPOUNDS BEING WITHIN THE RANG OF ABOUT 0.5 AND ABOUT 50.
Claim 2
Dependent Claim
41 words
A VITREOUS CERAMIC MATERIAL COMPRISING BARIUM ITANATE AND A SUBSTANCE FROM THE CLASS CONSISTING OF SODIUM AND POTASSIUM COLUMBATES AND TANTALATES, THE PERCENTAGE BY WEIGHT OF SAID SODIUM OR POTASSIUM COMPOUNDS BEING WITHIN THE RANG OF ABOUT 0.5 AND ABOUT 50.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-07-20 | 1957-01-19 | 1957-07-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-07-20 | 1961-01-19 | 1961-07-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-07-20 | 1965-01-19 | 1965-07-21 | $7700.00 | Window Closed / Lapsed |